@Isabel Da Silva de Freitas Agreed, it's typically the power of the mind that turns people away from Carnivore, because the physiology doesn't seek opinion, preference, or normalization; physiology seeks what's optimal for the given species. For humans, red fatty meat is optimal because of it's high bioavailability with all essential micros and macros. People typically can talk their way out of Carnivore, and strong coaches like the ones in this group will continue to help others talk their way "IN" to Carnivore. It takes them acknowledging that they are likely addicted to foods, and this includes even FRUITS!
Love that you seek the next best option to help keep them on the runway to success. Maybe meat alone isn't sustainable for a given person on the journey, but the next best foods include some low glycemic fruits and vegetables. Though, to your point, part of the "real" conversation includes being honest that foods outside of animal foods is less than optimal. Beneficial isn't optimal - beneficial isn't essential. Animal foods, including red meat, eggs, bacon, fish, contain all essential micros and macros for humans. But if a less than Carnivore, animal-based, approach helps keep one on track, then it's a better outcome than binging on high glycemic foods which are often addictive, even fruits found in nature.
@James Newmeyer standard ketone measurements check serum ketones levels. Ketones in the blood are signs of ketone inefficiencies, often occuring earlier in the fat adaptation process. The tissues of long term (6mo - 12mo) fat adapted metabolisms use ketones so efficiently that ketones don't live in the blood. Nice call out!
Narrowing the feeding window is a great call! You bring up great insights on metabolic disease status, often tied to T2D since it's so common, sadly. Insulin on top of insulin resistance isn't a cure for the disease, as you know, and convincing people to learn for themselves could take some time. For those who take the leap and begin testing 24hr + fasting windows, I would recommend they remain conscious of sodium/electrolyte intake because of lower insulin promotes salt excretion (which is a good thing as opposed to mainstream beliefs). Sodium will help remove symptoms such as headache, dizziness, fatigue, and even food cravings.